Ruby 矩阵类的flatten()函数

flatten()是一个数组类方法，用于返回扁平化的数组，即一维数组。

语法。Array.flatten()

参数。数组

返回一维数组

例子 #1 :

# Ruby code for flatten() method
  
# declaring array
a = [[18, 22],
    [ 33, nil, 5, 6]]
  
# declaring array
b = [[[1, 4, 1, 1, 88, 9]]]
  
  
# flatten
puts "flatten : #{a.flatten()}\n\n"
  
# flatten
puts "flatten : #{b.flatten()}\n\n"

输出:

flatten : [18, 22, 33, nil, 5, 6]

flatten : [1, 4, 1, 1, 88, 9]

例子 #2 :

# Ruby code for flatten() method
  
# declaring array
a = [["abc", "nil", ],
    ["dog"]]
  
# declaring array
b = [[[["cow", nil, "dog"]]]]
  
  
# flatten
puts "flatten : #{a.flatten()}\n\n"
  
# flatten
puts "flatten : #{b.flatten()}\n\n"

输出:

flatten : ["abc", "nil", "dog"]

flatten : ["cow", nil, "dog"]